MODE-LOCKING IN COUPLED OSCILLATORS AS IS EXEMPLIFIED IN CHEMICAL ANDHYDRODYNAMIC SYSTEMS

Simple theoretical consideration on the coupling of neighboring two id entical oscillators under nonequilibrium open conditions suggests that there exist two phase-locking modes with in-phase and antiphase. In t he actual experiment for the coupled oscillators using ion-exchange be ads in BZ reaction, it is shown that in-phase mode is generated where the void space between the beads conducts the role of a pacemaker. It is also shown that both in-phase and anti-phase modes are induced in t he coupling between two coupled PET-bottle oscillators; synchronizatio n of the periodic fluid flow in interconnected bottles which are situa ted upside-down.